{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2025-40228 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2025-40228 is a vulnerability in Linux, published on 4 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-40228 and fix it if it is affected.\n\nWhat it is: CVE-2025-40228 is a vulnerability in Linux, published on 4 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2025-40228 in the wild and no public exploit code.\n\nAffected product: Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2025-40228/ (Markdown: https://insights.sbomify.com/CVE-2025-40228/index.md)","id":"CVE-2025-40228","markdown":"https://insights.sbomify.com/CVE-2025-40228/index.md","name":"CVE-2025-40228","record":{"aliases":["BELL-CVE-2025-40228","DEBIAN-CVE-2025-40228","GHSA-2g63-4p26-m2f6","UBUNTU-CVE-2025-40228"],"analysis":{"component_type":"kernel","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Linux kernel","requires_auth":"high_privilege","summary":"A missing allocation check in the Linux kernel DAMON sysfs interface can lead to invalid memory access and system crash.","user_interaction":"not_required","vuln_class":"null_dereference"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Linux","cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm/damon/sysfs: catch commit test ctx alloc failure\n\nPatch series \"mm/damon/sysfs: fix commit test damon_ctx [de]allocation\".\n\nDAMON sysfs interface dynamically allocates and uses a damon_ctx object\nfor testing if given inputs for online DAMON parameters update is valid.\nThe object is being used without an allocation failure check, and leaked\nwhen the test succeeds.  Fix the two bugs.\n\nThis patch (of 2):\n\nThe damon_ctx for testing online DAMON parameters commit inputs is used\nwithout its allocation failure check.  This could result in an invalid\nmemory access.  Fix it by directly returning an error when the allocation\nfailed.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"mm/damon/sysfs: catch commit test ctx alloc failure","id":"CVE-2025-40228","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"null_dereference","year":"2025"},"n_packages":0,"n_references":2,"next":{"headline":"mm/damon/core: fix potential memory leak by cleaning ops_filter in damon_destroy_scheme","id":"CVE-2025-40229"},"packages":[],"prev":{"headline":"mm/damon/sysfs: dealloc commit test ctx always","id":"CVE-2025-40227"},"products":["Linux"],"published":"2025-12-04","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2026-05-11","vendors":["Linux"]},"summary":"A missing allocation check in the Linux kernel DAMON sysfs interface can lead to invalid memory access and system crash.","url":"https://insights.sbomify.com/CVE-2025-40228/"}